Explain about genetic diversity, Biology

Assignment Help:

Q. Explain about Genetic Diversity?

Genetic diversity is the "fundamental currency of diversity" that is responsible for variation. This is the diversity of basic units of heredi tary information which are passed down generations found within a species (e.g. different varieties of the same species). Genetic diversity underlies the variability (differences) among individuals of a given species. For example no two individuals even in the same family are identical, unless of course they are identical twins with the same genome (i.e. complete genetic makeup). This is true of all species, because any individual resulting from sexual reproduction, except identical twins, has a slightly di fferent combination of genes from another individual. The differences in the genetic makeup of organisms also form the basis for variation within a population, or between populations, of that species.

Thus, genetic diversity within a species will increase with the number of individuals of a given species. It is estimated that there are about 10
different genes distributed throughout the world's biota (i.e. living component). It is genetic diversity that allows a species to adapt to changing environmental conditions such as a lower rainfall, a higher temperature year round, etc. The effective conservation of genetic diversity within a species cannot, however, be achieved by merely conserving the species. This is because the conservation of one or few population(s) of a species cannot lead to conservation of genetic diversity. For example conserving one or more populations of a species may conserve the species as a whole, but may not serve to capture its entire genetic diversity. For example losing even a single population or a group of individuals in a population, may sometimes result in the loss of genetic variation. Sometimes the lost variation of a gene may even be crucial for the future survival of the species in the face of changing environmental conditions.


Related Discussions:- Explain about genetic diversity

Phylum protozoa, what is the classificatin of phylum protozoa with orders

what is the classificatin of phylum protozoa with orders

Are the arterial pulsations normal, Are the arterial pulsations normal? ...

Are the arterial pulsations normal? Is the pulse volume normal or increased? Is there a discrepancy of pulsation in any of the four extremities? A careful evaluation of pulsati

Explain the regulation of blood glucose concentration, Explain the Regulati...

Explain the Regulation of Blood Glucose Concentration? A number of mechanisms function to maintain blood glucose at remarkably constant level of 70-100 mg/dl under fasting cond

Why male and female gametophytes are independent, Male and female gametophy...

Male and female gametophytes are independent and free-living in: 1. Mustard 2. Castor 3. Pinus 4. Sphagnum Sphagnum

What is the valve that separates the aorta from the heart, What is the valv...

What is the valve that separates the aorta from the heart? What is the importance of that valve? The valve among the left ventricle and the aorta is the aortic valve. The aorti

Explain the adverse effects of rifamycin, Adverse effects of rifamycin  ...

Adverse effects of rifamycin  No severe adverse effects were observed in clinical trials with rifaximin. There have been a few postmarketingeports of hypersensitivity reactions

Ooplasmic determinants and somatic cell determination, Ooplasmic Determinan...

Ooplasmic Determinants and Somatic Cell Determination Eggs of tunicates go through typically mosaic development in which the various blastomeres become determined to follow th

What is imbibition, What is Imbibition The ability of colloids to pick ...

What is Imbibition The ability of colloids to pick up water and swell when they come in contact with water is called imbibition. Imbibition is usually accompanied by the evo

Where do most allergic reactions occur, Most of them happen on mucous membr...

Most of them happen on mucous membrane. Allergens enter the body by the process of inhalation or ingestion.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd